Insulating Ceramic Tubes – Cobcraft, Mate & Small Kilns
High‑temperature ceramic insulating tubes used to protect element tails as they pass through the kiln wall and into the electrical terminal box. These tubes prevent arcing, shorting, and heat transfer between the element ends and the metal enclosure, ensuring safe and reliable operation.
Each tube insulates one element end, so each element requires two tubes.
This listing includes all tube sizes for:
Cobcraft Octagon kilns
Cobcraft Decagon kilns
Cobcraft Hexagon kilns
Mate kilns (smaller‑diameter tube)
China Painter kilns
Mini Kilns
Laboratory Ovens
Please select your kiln model from the drop‑down menu to ensure the correct tube size.
Tube Sizes (for customers ordering by size)
For those who simply need replacement insulating tubes by dimension rather than kiln model:
Large Tube – 150 × 12 mm
Suitable for Cobcraft Octagon, Decagon, and Hexagon kilns
Designed for element tails up to 3.5 mm diameter
Small Tube – 60 × 10 mm
Suitable for Mate kilns, China Painter kilns, Mini kilns, and Laboratory Ovens
Designed for element tails up to 3.5 mm diameter
Product Details
High‑temperature ceramic construction
Prevents electrical arcing through the kiln wall
Protects element tails at the terminal entry point
Long‑life replacement for cracked, worn, or heat‑damaged tubes
Correct sizes available for all Cobcraft, Mate, and small‑kiln models
Ordering Information
2 tubes are required per element (one for each end)
Select your kiln type or tube size from the drop‑down before adding to cart